Automatic lubricator.



J. FARLEY.

PATENTED AUG. 20, 1907.

AUTOMATIC LUBRIGATO'R.

APPLIQATION FILED APR. 6, 1904.

TH: NORRIS PETERS "M 5m Y ca, wxsauyamu, u c.

UNITED STATES PATENT OFFICE.

JAMES FARLEY, OF WAUKESHA, WISCONSIN.

AUTOMATIC LUBRICA'IOR.

To all whom it may concern:

Be it known that 1, Mains FARLEY, a citizen of the United States,residing at \Vaukesha, in the county of Waukesha and State of Wisconsin,have invented certain new and useful Improvements in AutomaticLubricators, of which the following is a specification.

My invention relates to improvements in automatic lubricators for theair cylinders of air pumps, its object being particularly to provide animproved form of automatic lubricator which will be actuated withoutWaste of air from the cylinder, and, as a part of the lubricator, meansfor determining the existence of leaks through the air pump.

To this end my invention consists in the features of construction andcombination hereinafter particularly described and claimed.

In the accompanying drawings forming part of this specification, Figure1 is a side elevation of my improved lubricator; Fig. 2 is a section online .r:c of Fig. 1, and Fig. 3 is a top view of the lubricator with thecover removed.

In the drawings A represents the lubricator casing having its lower end2 threaded for insertion into the air cylinder of an ordinary air pump.Extending centrally through the casing A is an outlet port or conduit 3.Threaded upon the upper end of the casing A is an oil cup 4, formed inits top with openings 5 to permit the filling oi the cup and at itsbottom with a port 6 opening into the chambered upper end 7 of theoutlet conduit 3. Extending slidably through the oil cup is a stem 8formed upon its lower end with a valve 9 which is normally held closingthe port 6 by means of a coil spring 10. Threaded upon the exteriorupper end of the stem 8 are nuts 11 which, in operation, strike the topof the oil cup and limit the movement of the valve 9.

12 represents a closing cap adapted to fit over the oil cup, andprovided with an inlet air opening 13.

Arranged in the oil conduit 3 is a three-way valve 14 provided with adiametric opening 15 constituting part of the oil conduit 3 when thevalve is in the position shown in Fig. 2, and with a branch opening 16adaptedto be turned into registering position with an outlet opening 17in the lubricator casing, as hereinafter described. The valve isprovided with a suitable actuating handle 18.

Specification of Letters Patent.

Application filed April 6, 1904;. Serial No. 201,790.

Patented Aug. 20, 1907.

In use, the lubricator being connected with the air cylinder, the cupwill be filled with lubricant and the cover placed in position, as shownin Figs. 1 and 2. As a partial vacuum is created in the cylinder in theoperation of the pump, the atmospheric pressure above the oil cup willopen the valve 9, allowing oil to pass around said valve and through theconduit 3 to the cylinder, the valve being returned to its seat by thespring 10. By means of the spring 10 the valve is returned to its seatwithout the assistance of the back pressure of air from the cylinderthrough the oil conduit 3, and thus escape of around the valve 9 isprevented. By adjusting the nuts 11, movement of the valve 9 will beregulated. When the pump is not running the three-way valve may beturned to register with the outlet port 17 and the pump thus tested forleaks, as any leakage of air through the pump will result in the escapeof the leaking air through the oil conduit 3 and outlet port 17.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is:-

1. In a device of the class described, a lubricant containing cup havinga discharge passage, a spring closed valve for said passage, a maincasing having a feed passage for the lubricant and provided with an airport, and a three way valve mounted in the casing and controlling thefeed passage and the air port.

2. In a device of the class specified, a casing having a main feedpassage and provided with a lateral port in communication with the outerair, a three way valve controlling the passage and the port, a lubricantcup arranged above the casing and having a discharge passage that com'municates with the main feed passage, and a check valve adapted toprevent the discharge of the lubricant from the cup, said valve beingarranged to be opened by suction.

3. In combination a lubricator casing provided with a longitudinalconduit and a connected branch conduit, an oil cup secured to one end ofsaid casing and communicating with said conduit, :1. pair of valvesarranged in said conduit, one at the inlet end thereof, and one incommunication with the branch conduit, and a closing spring for JAMESFARLEY.

Witnesses:

H. S. JOHNSON, EMILY F. OTIS.

